1. Medical and Sport Sciences; University of Cumbria; Lancaster UK
2. Medical School; Lancaster University; Lancaster UK
3. Department of Respiratory Medicine; Manchester University NHS Foundation Trust; Manchester UK
4. PHRI; St George's, University of London; London UK
5. Department of Respiratory Medicine; North West Lung Centre, Wythenshawe Hospital, Manchester University Hospitals NHS Foundation Trust; Manchester UK
6. East Lancashire Hospitals NHS Trust; Blackburn UK